I would get rid of that card and spend 140.00 0n a ati or nvidia card...u can get a XFX 7600gt xxx for 140.00 at newegg...over clocks easy i had mem up to 1700...for 140 u can't beat it....your card is just to old....go iiinnnvvvviiiiddddiiiaaaa

will a softmod not help?
wait is that just the 9500 ? maybe.
cant think, heres the link anyway (http://www.techpowerup.com/softmod/), you should be able to overclock it to 9600 speeds without flashing it and crippling your card

(if you cant even find your memory chips do not try to flash the bios on your own, do it at your own risk!!)